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M1 MBP & LG 34 inch ultra wide 5K2K

nikosl7 said:
Any changes in the latest Big Sur Beta?
Click to expand...
Nope, next stop 11.4 or 12.0 ;)

edit: never... 11.4 beta:

Displays​

New Features in macOS Big Sur 11.4 Beta​

  • You can now use graphics cards based on the AMD Navi RDNA2 architecture (6800, 6800XT and 6900XT). (73709953)
 
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I can't even manage to get any HiDPI resolution going on DP 1.4 with the LG 5k2k. Only getting 3840x2160 max and no UI scaling.

Running the M1 MacMini and 11.4 Beta 1 of course.

@Ricoh GR at least for me this is DP via Thunderbolt and probably what you call USB-C - this is just the protocol, not the connector. SO cable is Thunderbolt (Original one that came with the display) and Display-Port protocol version is selectable through display settings. (1.1, 1.2 or 1.4)
 
I am running 11.2.3 on a M1 MBA. My LG 5K2K was changing scaling to non-retina options after sleep also. Once I changed to Display Port 1.4, it seems to have gone away. What is weird is I am running the monitor through Thunderbolt. I could always correct it by unplugging the monitor and plugging back in, but this seems to have fixed the change after sleep.
 
Helmi74 said:
I can't even manage to get any HiDPI resolution going on DP 1.4 with the LG 5k2k. Only getting 3840x2160 max and no UI scaling.

Running the M1 MacMini and 11.4 Beta 1 of course.

@Ricoh GR at least for me this is DP via Thunderbolt and probably what you call USB-C - this is just the protocol, not the connector. SO cable is Thunderbolt (Original one that came with the display) and Display-Port protocol version is selectable through display settings. (1.1, 1.2 or 1.4)
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Did you get this fixed in the end?
 
Helmi74 said:
I can't even manage to get any HiDPI resolution going on DP 1.4 with the LG 5k2k. Only getting 3840x2160 max and no UI scaling.

Running the M1 MacMini and 11.4 Beta 1 of course.

@Ricoh GR at least for me this is DP via Thunderbolt and probably what you call USB-C - this is just the protocol, not the connector. SO cable is Thunderbolt (Original one that came with the display) and Display-Port protocol version is selectable through display settings. (1.1, 1.2 or 1.4)
Click to expand...

Hello, @Helmi74 I believe that your issue is fixable by updating the firmware of the monitor. The newest version is 4.12, 16, 4.17. You can check the current firmware with LG's OnScreen Control app. It could also be the cable. I would recommend good quality bi directions 40 Gbps Thunderbolt 3 cable.

Regards,
MT
 
xszuflax said:
Hello, @Helmi74 I believe that your issue is fixable by updating the firmware of the monitor. The newest version is 4.12, 16, 4.17. You can check the current firmware with LG's OnScreen Control app. It could also be the cable. I would recommend good quality bi directions 40 Gbps Thunderbolt 3 cable.

Regards,
MT
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Hi. Were you able to update the firmware on a Mac? Every time I try to update my monitor, OnScreen Control crashes at 1% and the firmware is not updated…
 
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ma.con said:
Hi. Were you able to update the firmware on a Mac? Every time I try to update my monitor, OnScreen Control crashes at 1% and the firmware is not updated…
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Hey,

I did not since when there was no working version of LG's OnScreen Control at the time. Several ppl on this forum claimed that they did it on BigSur with M1 though.

Regards,
MT
 
Trying to determine if I should just sell this monitor, doesn't seem like I'll ever get my awesome scaled resolutions back at this rate.
 
anchoricex said:
Trying to determine if I should just sell this monitor, doesn't seem like I'll ever get my awesome scaled resolutions back at this rate.
Click to expand...

Same here with the macMini M1. Thought to use it as a replacement for my iMac 2017 but without a proper display it's just not worth anything, and I'm not going to buy some old 27" 5k display. Kind of disappointed that Apple doesn't get this fixed even half a year after publicly aknowleding the problem.
 
Does this display work fine running at pixel doubled resolution, aka 2560 x 1080 on the M1 mini on Big Sur?
 
I'm like on the verge of selling this monitor for something else. I enjoy using my ****** work monitors more than this thing right now with the limited resolutions
 
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Have ya'll filed formal complaints with Apple?

Seems odd that this issue hasn't been fixed yet.
 
We suspect that it is hardware limitation of the M1 graphics. M1 seems to have a maximum output of 4.5k + 6k. They did not even introduce a larger sized iMac with M1 because of this.

If any software solution comes, it will disable the 2nd output monitor.
 
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nikosl7 said:
We suspect that it is hardware limitation of the M1 graphics. M1 seems to have a maximum output of 4.5k + 6k. They did not even introduce a larger sized iMac with M1 because of this.

If any software solution comes, it will disable the 2nd output monitor.
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The M1 can definitely output sufficient pixels to drive up to a single 8k display from a hardware perspective.

You can currently run 1x LG 5k at 5120 x 2880 and the internal display running at 2560 x 1600. I have tested with the external display running at 6016 x 2538 and the internal display running at 3840 x 2400 to drive a total number of pixels exceeding an 8k resolution. So in terms of raw rendering capability, we know the M1 can do it.

As we also know using SwitchResX we can inject custom resolutions, we know that there is a software limit applied to constrain pixel output to 6008 pixels wide.

When someone finds a way to override that limit, we an begin testing the single display limit of the chip!

Fingers crossed someone figures that out soon!
 
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itsphilgeorge said:
The M1 can definitely output sufficient pixels to drive up to a single 8k display from a hardware perspective.

You can currently run 1x LG 5k at 5120 x 2880 and the internal display running at 2560 x 1600. I have tested with the external display running at 6016 x 2538 and the internal display running at 3840 x 2400 to drive a total number of pixels exceeding an 8k resolution. So in terms of raw rendering capability, we know the M1 can do it.

As we also know using SwitchResX we can inject custom resolutions, we know that there is a software limit applied to constrain pixel output to 6008 pixels wide.

When someone finds a way to override that limit, we an begin testing the single display limit of the chip!

Fingers crossed someone figures that out soon!
Click to expand...
100% agreed with what you wrote.

Just to clarify, Apple would not introduce a new Mac that cannot drive one external Pro XDR display. A 24" iMac is the maximum sized retina display that they could have while keeping the option for an external Pro XDR at 6k.

I strongly believe that they cannot even do a 5k M1 iMac (with the support for external 6k).
 
nikosl7 said:
I strongly believe that they cannot even do a 5k M1 iMac (with the support for external 6k).
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By slightly modifying existing M1 Mac capabilities, they could do an internal dual tile 5K by removing the dual tile 5K capability of Thunderbolt. The 6K is single tile when DSC is used so it should work. The only new thing here is being able to do:
2560x2880+2560x2880+6016x3384

The best we've seen so far from an M1 Mac is:
2560x2880+2560x2880+3840x2160

Or Apple could move away from dual tile 5K and create a display board that can do 5120x2880 10bpc using DSC (or the display could be dual tile but is driven by a single tile with DSC - the display board can then decompress and split the signal to the two tiles). In this way, they could keep the dual tile capability of Thunderbolt so the user can do one of these:
1) 5120x2880+2560x2880+2560x2880
2) 5120x2880+6016x3384
 
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I forgot to add the info for the new M1 iMac. I assume it's a single tile using HBR3 ≈4480x2520 60Hz 721MHz 10 bpc.

Currently supported arrangement examples:
3840x2160 + (2560x2880 + 2560x2880) (M1 Mac Mini 4K HDMI with 5K dual-tile)
4480x2520 + (2560+2880 + 2560+2880) (M1 iMac 24" with 5K dual-tile)
4480x2520 + 6016x3384 (M1 iMac 24" with 6K)

Proposed M1 iMac 27" (internal dual-tile method):
(2560+2880 + 2560+2880) + 6016x3384 (M1 iMac 27" with 6K)
(no support for external dual dual-tile display if we're still limited to three DisplayPorts)

Proposed M1 iMac 27" (internal single-tile with DSC):
5120x2160 + (2560+2880 + 2560+2880) (M1 iMac 27" with 5K dual-tile)
5120x2160 + 6016x3384 (M1 iMac 27" with 6K)

The three Proposed M1 iMac 27" arrangements all have more pixels than we've seen before on M1 Macs. The last arrangement has two DSC displays which is one more than we've seen before on M1 Macs.

Of course, M1 iMac 27" is probably when Apple will show a new Apple Silicon chip which will maybe support 4 DisplayPort outputs so it can support two dual-tiled displays (so they won't need new 5K hardware) and maybe more than one external display.
 
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I'm not sure why this should be a hardware issue. The display runs at full native resolution – at least in my case. Which is 5120x2160 and from what I read this is also true for the 6k on the Apple Pro Display XDR. The only real issue here is the UI-scaling which should not at all be limited by GPU power or other hardware issues.

Note: This is for the UI-Scaling issue in a single monitor setup on an Apple Mini - might be totally different for additional monitors on a mobile Mac (multi display) or for those having issues getting the full resolution out. At least for my issue this should be 100% software solvable.

And yes, I did report this through Apple Feedback assistant months ago and was already notified about a possible solution a few weeks (and beta versions) back but with no luck. I added more feedback but since didn't receive any messages again.

If you didn't report it to Apple yet, please do us all (and yourself) a favor and do so. Apple needs to get more pressure on the issue to hopefully solve it.
 
This is complete insanity. The last thing on my mind was worrying about finding a display when buying the M1 mini, but apparently it is the biggest issue. Usable (practical) HiDPI scaled resolutions don't exist or work, font smoothing and sub pixel anti-aliasing options are a thing of the past. So, after MUCH searching (and buying and returning 2 monitors already), I literally have ONE option for clean font rendering and usable resolution for my Mac mini -- the LG 5k 27. And I don't want a 27, I need a 34-wide, or a 32. Making non-retina and non-apple monitors look like garbage is seemingly what Apple intends. I'm sure this is no accident. I already called Apple about this (which was a complete waste of time). I now just want my money back from Apple - enough is enough.
 
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